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Now Playing: 05-17-12 Marketplace Morning Report

Shareholders of Chesapeake Energy are asking a judge to delay the company's annual meeting so they can get more information about their CEO's compensation and his personal financial interest in drilling natural gas wells. Chicago is getting ready for all the world leaders who will be in town for the big NATO meeting that starts today -- and for the busloads of people who will be coming into town to protest. What is a joint venture, and why is it worthwhile for companies? And Los Angeles sports fans -- and the Staples Center -- are flying high as three of the city's pro teams are in the playoffs.